Datasheet

TPS70445, TPS70448
TPS70451, TPS70458
TPS70402
SLVS307F –SEPTEMBER 2000–REVISED APRIL 2010 www.ti.com
DISSIPATION RATINGS
DERATING
PACKAGE AIR FLOW (CFM) T
A
≤ +25°C T
A
= +70°C T
A
= +85°C
FACTOR
0 3.067W 30.67mW/°C 1.687W 1.227W
PWP
(1)
250 4.115W 41.15mW/°C 2.265W 1.646W
(1) This parameter is measured with the recommended copper heat sink pattern on a 4-layer PCB, 1 oz. copper on a 4-in by 4-in ground
layer. For more information, refer to TI technical brief SLMA002.
RECOMMENDED OPERATING CONDITIONS
Over operating temperature range (unless otherwise noted).
MIN MAX UNIT
Input voltage, V
I
(1)
(regulator 1 and 2) 2.7 6 V
Output current, I
O
(regulator 1) 0 1 A
Output current, I
O
(regulator 2) 0 2 A
Output voltage range (for adjustable option) 1.22 5.5 V
Operating virtual junction temperature, T
J
–40 +125 °C
(1) To calculate the minimum input voltage for maximum output current, use the following equation: V
I(min)
= V
O(max)
+ V
DO(max load)
.
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